The basic structure of the PM2.5 mask is that the outer layer is an antibacterial fabric made of carbon fiber felt, polymer fabric, non-woven fabric, and the like. The middle layer is a warm filling, the bottom layer is a PM2.5 filter, and the dust-free granular activated carbon is added in the middle of the filter. The filter is treated with nano silver bactericide, and the filter is about 95% to 99%. The main material of the PM2.5 mask is the use of non-woven fabrics, filter paper, etc., and the most important is the use of lead carbon cloth, which can play a better anti-virus function. PM2.5 masks are generally disposable masks. Try not to use them twice or more.
According to the classification of grades, PM2.5 masks are generally divided into:
Ordinary grade: no disinfection, may contain pathogenic substances, only suitable for dust and granules.
Disinfection level: only kill pathogenic microorganisms, there are still other microorganisms breeding, only for ordinary occasions.
Sterilization grade: kills all microorganisms and achieves sterility, suitable for medical and public use.
The safety factor of ordinary grade and disinfection grade is much lower than that of sterilization grade, so consumers should look at the outer packaging and distinguish the grade when purchasing disposable masks.
